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Table 4 The antioxidant activity of tea brands in mg of AAE/g DW and IC50 values

From: Determination of some selected secondary metabolites and their invitro antioxidant activity in commercially available Ethiopian tea (Camellia sinensis)

Tea samples

AOAG mg AAE/g DW

IC50% value (µg/mL)

Green tea

80.0 ± 0.63e

7.303 ± 1.35a

Black lion

28.8 ± 1.86a

56.067 ± 2.02c

Eirmon

41.9 ± 0.87c

51.320 ± 1.45b

Gumero

52.3 ± 2.91d

47.086 ± 2.04b

Abyssinia

42.9 ± 2.07bc

51.325 ± 1.69b

Dire

40.7 ± 2.72bc

64.015 ± 2.81d

Addis

40.8 ± 3.40bc

51.145 ± 2.85b

Wushwush

32.6 ± 1.92a

61.830 ± 2.37d

  1. Values in the same column that are followed by a different letters (a–e) are significantly different p < 0.05 by Duncan’s multiple range tests
  2. AOAG is the antioxidant activity, expressed in milligrams of ascorbic equivalents per g of dry tea sample